Contact Amazon to make sure you had NO orders. I did that and had an order so they credited me. Amazon is a stickler though. Their terms are your visitors have to buy something within 24 hours of when they click and they can't already have the items in their cart. That's my understanding anyway. You might also need more targeted traffic. Are your keywords to broad?
many keyword my shop have many produtcs but can't sale. also i've promote with twitter....have a lot of click but no sale.....sighhh
If the promotion you do is not targetted, then you can have all the clicks you want, people won't buy! There are a lot of "junk traffic" schemes around, like the supremely useless TrafficSwarm - that send you loads of visitors, but those visitors have no interest in buying. Though it would be strange not to get a few residual sales, even through those, with that many clicks. Are you sure they're not bots, or something?
Change keywords , Change Adstext Write down adstext to ppl who want to buy , Not ppl who are interest
You really have to start writing useful content and ask people to buy through them, specifically saying that you're earning commission to keep the site up. I do that and often have readers asking me if I receive commission from their purchases.
Amazon is difficult to convert because of the short cookie duration. I would check out http://www.prosperent.com as an alternative. You can integrate the ads into your site or even use the larger formats to create a price comparison style site. Prosperent pays out high commissions, and they have 30+ day cookies. Over 10 million products offered currently from top brands. You will need a beta invite code to join though, so please use this to get started: VE0XOSZZSTFY1Z